Basic components of Integrated Nutrient Management Next

Basic components of Integrated Nutrient Management Different components of INM There are various components of plant nutrients for INM which can be applied in an integrated way. Some of these are mentioned below : i) Chemical fertilizers ii) Organic manures like FYM in situ, Vermicompost iii) Farm wastes like paddy straw, wheat straw iv) Industrial waste v) Inclusion of legume crops in cropping system vi) Biofertilizers like azolla, blue green algae, rhizobium vii) Crop residues viii) Green manuring either growing in the same field or incorporating of leguminous plant or leaves. End Next

Basic components of Integrated Nutrient Management Different components of INM End Previous Next

Basic components of Integrated Nutrient Management Benefits of INM components There are numbers of benefits we can achieve through these practices which are laid as follows: Use of Chemical fertilizer : Chemical fertilizers are rich in nutrients. They are required in less quantity to supply nutrients as compared to organic manures. But continuous use of chemical fertilizers deteriorate the soil conditions. Therefore, chemical fertilizers should be accompanied by organic /biofertilizer.   End Previous Next

Basic components of Integrated Nutrient Management 2. Application of organic manure under rain fed lowland conditions Improves the bulk density of soil up to a layer of 25 cm. Reduces resistance to penetration. Supplements N up to 50% of the nitrogenous requirement of the crop. Increases available N and N and P use efficiency when combined with 100% of the recommended quantity of NPK + Biofertilizers. End Previous Next

Basic components of Integrated Nutrient Management 3. How green manure improves nutrient use efficiency ? Green manure improves nutrient use efficiency in various ways : Green manuring through Sesbania aculeata is equivalent to 60 kg inorganic N/ha. Incorporation of mungbean after picking pods results in savings of 60 kg inorganic N/ha for the rice crop Alley cropping to Leucaena leucocephala, Gliricidia sepium and Acacia mangium can provide 100-300 kg N/ha per year. Pruning of Sesbania rostrata planted as hedgerows provides 3-4 t/ha dry matter after decomposition, it releases an average of 70 kg N/ha End Previous Next

Basic components of Integrated Nutrient Management Besides above, green manure helps in Increasing apparent use efficiency of K when combined with 50% of the recommended NPK. Having residual effect on the next crop. Minimizing the adverse effects of AI3+ and /or Fe 2+ in acidic lateritic soils through the chelation of these ions by organic molecules liberated from FYM in the course of mineralization. End Previous Next

Basic components of Integrated Nutrient Management 4. How application of biofertilisers such as azolla and blue-green algae helps? 1. Adds about 25.30 kg N/ha in the soil. 2. Improves bulk density and reduces penetration resistance when it is added with organic manures. 3. Has a residual effect on the next crop. End Previous Next

Basic components of Integrated Nutrient Management 5. Use of green manure in crop rotation before transplanting rice.  Supplements about 50% of the total N requirement of rice Provides about 75-100 % of the crop’s requirement in the case of rain fed lowlands when the requirement for N is relatively low (60-80 kg N/ha). Has a mobilizing effect on PK and micronutrients in the soil. Reduces the leaching and gaseous losses of N, thus increasing the efficiency of applied plant nutrients. Can skip the P allocation to rice when 30 kg P2O5/ha is applied to the green manure crop. End Previous Next

Basic components of Integrated Nutrient Management Provides 20-25 kg N/ha Improves the soil organic matter. Improves physico-chemical and biological condition of the soil It is quite interesting that Incorporation of crop residues before rice Practices to be adopted for use of waste Various practices can be adopted to convert wastes into suitable products Convert all available biomass on the farm into compost instead of burning or wasting it. Make use of cattle excreta as manure rather than as fuel. Production of compost from paddy straw End Previous